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Marital structure and genetic heterogeneity of Ramea Island, Newfoundland.

https://arctichealth.org/en/permalink/ahliterature241691
Source
Am J Phys Anthropol. 1983 Aug;61(4):401-9
Publication Type
Article
Date
Aug-1983
Author
E J Devor
M H Crawford
T. Koertvelyessy
Source
Am J Phys Anthropol. 1983 Aug;61(4):401-9
Date
Aug-1983
Language
English
Publication Type
Article
Keywords
Alleles
Antigens, Surface - genetics
Blood Group Antigens - genetics
Blood Proteins - genetics
Erythrocytes - immunology
Female
Gene Frequency
Genetics, Population
Humans
Male
Marriage
Newfoundland and Labrador
Population Dynamics
Socioeconomic Factors
Abstract
The population structure of Ramea Island, Newfoundland, is described using surname, marital migration, and serological data. Results presented indicate that Ramea is an open and heterogeneous population. It is shown, however, that this contemporary characterization has a time depth of only three decades and has resulted from a rapid population response to a single historical/economic event.
PubMed ID
6624884 View in PubMed
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The population structure of ten Newfoundland outports.

https://arctichealth.org/en/permalink/ahliterature195460
Source
Hum Biol. 2000 Dec;72(6):997-1016
Publication Type
Article
Date
Dec-2000
Author
L J Martin
M H Crawford
T. Koertvelyessy
D. Keeping
M. Collins
R. Huntsman
Author Affiliation
Department of Anthropology, University of Kansas, Lawrence 66045, USA.
Source
Hum Biol. 2000 Dec;72(6):997-1016
Date
Dec-2000
Language
English
Publication Type
Article
Keywords
Blood Group Antigens - genetics
Factor Analysis, Statistical
Gene Frequency
Genetics, Population
Humans
Likelihood Functions
Newfoundland and Labrador
Regression Analysis
Religion and Medicine
Abstract
Island populations are most informative in the study of the genetic structure of human aggregates. These populations are often of small size, thus violating the Hardy-Weinberg assumption of infinite size. Some geographically isolated island populations are further subdivided by religion, ethnicity, and socioeconomic factors, reducing their effective sizes and facilitating genetic changes due to stochastic processes. Because of extreme geographic and social isolation, fishing communities or outports of Newfoundland have been investigated for genetic microdifferentiation through the founder effect and genetic drift (Crawford et al. 1995). The purpose of this paper is to examine the population structure of 10 Newfoundland outports using the allelic frequencies derived from 12 red cell antigens. To achieve this goal, first we calculated gene frequencies using maximum-likelihood estimation procedures. Second, we used R-matrix methods to explore population differentiation. Third, we regressed mean per-locus heterozygosity on genetic distance from the gene frequency centroid to identify the most isolated populations. On the basis of this information, the three outports of Seal Cove, Island Harbor, and Tilting were found to be genetically differentiated from the other small populations. Moreover, religious and geographic subdivisions appear to explain the observed genetic variation.
PubMed ID
11236869 View in PubMed
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